/Engine/Source/Runtime/InteractiveToolsFramework/Public/InputBehavior.h
Create a begin-capturing instance ofFInputCaptureUpdate
static [FInputCaptureUpdate](API\Runtime\InteractiveToolsFramework\FInputCaptureUpdate) Begin ( [UInputBehavior](API\Runtime\InteractiveToolsFramework\UInputBehavior) * SourceBehavior, EInputCaptureSide WhichSide, void * CustomData )